m0useanswered grow question 2 years ago 1000w advertised or 1000w draw? big difference.
Good brands advertise draw, shity brands advertise theoretical max draw based on individual diodes.
if its under 0 0 for 1000W draw it is not real or really bad efficiency.
If you new to growing you do not need 1000W go for 300W draw or lower depending on your tent size.
check out migro on youtube for great lighting advice and reviews.
Best Of Luck!